US166863A - Improvement in processes of producing salicylic acid - Google Patents
Improvement in processes of producing salicylic acid Download PDFInfo
- Publication number
- US166863A US166863A US166863DA US166863A US 166863 A US166863 A US 166863A US 166863D A US166863D A US 166863DA US 166863 A US166863 A US 166863A
- Authority
- US
- United States
- Prior art keywords
- salicylic acid
- improvement
- processes
- acid
- still
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- YGSDEFSMJLZEOE-UHFFFAOYSA-N Salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 title description 22
- 229960004889 salicylic acid Drugs 0.000 title description 10
- 238000000034 method Methods 0.000 title description 6
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 8
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 6
- 239000003513 alkali Substances 0.000 description 6
- 238000009835 boiling Methods 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 4
- 229960001860 salicylate Drugs 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 235000011089 carbon dioxide Nutrition 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 235000011167 hydrochloric acid Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/15—Preparation of carboxylic acids or their salts, halides or anhydrides by reaction of organic compounds with carbon dioxide, e.g. Kolbe-Schmitt synthesis
Definitions
- the drawing represents a side elevation, partly in section, of the apparatus which I prefer to use in carrying my invention into effect.
- the object of this invention is to improve boiler G.
- This still or boiler is charged with caustic soda or other alkali, and with carbolic acid, in the usual proportions employed in the manufacture of salicylic acid, and is placed on an oven or heater, D, whereby its contents are heated to the requisite degree.
- the carbonic-acid gas entering the heated contents of the still through the pipe a mingles with the same, and thus the salicylate of soda, or other salicylate of alkali, is produced, which, upon its removal from the still, is boiled in water to remove the superfluous carbolic acid, and finally exposed to the action of muriatic acid, in which the salicylic acid forms as a white precipitate.
- the still or boiler should have a means of discharging surplus vapors, and I therefore prefer to provide its neck or discharge-pipe b with a cock, 0.
- this cock When this cock is opened, the still or boiler may discharge into a vessel, E, whence the contents may be poured back into the still or boiler through a pipe, f, having a cock, g.
- the still or boiler 0 should also have a safety-valve, d, and a thermometer, h,- but I do not here lay claim to any arrangement of apparatus, as I claim and here desire to secure by Letters Patent
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
W. E. GRAF.
Process of Producing SalicyHc Acid.
No.l66,86 3.
PatenfedAug.17,1875.
lmimmw W. 5 7
g A; Z2427 'WMQWM: J? ejllrrag @MM UNITED STATES PATENT QFFIGE.
WILHELM EHREN FRIED GRAB, OF NEW YORK, ASSIGNOR TO HIMSELF AND SAMUEL W. GANFIELD, OF PIERMONT, N. Y.
IMPROVEMENT IN PROCESSES OF PRODUCING SAL'ICVLIC ACID.
Specification forming part of Letters Patent No. 166,863, dated August 17, 1875 application filed June 22, 1875.
CASE B.
To all whom it may concern:
Be it known that I, WILHELM EHREN- FRIED GRAF, of the city of New York, in the county and State of New York, have invented a new and Improved Process of Producing Salicylic Acid, of which the followingis a specification:
The drawing represents a side elevation, partly in section, of the apparatus which I prefer to use in carrying my invention into effect.
The object of this invention is to improve boiler G. This still or boiler is charged with caustic soda or other alkali, and with carbolic acid, in the usual proportions employed in the manufacture of salicylic acid, and is placed on an oven or heater, D, whereby its contents are heated to the requisite degree. The carbonic-acid gas entering the heated contents of the still through the pipe a mingles with the same, and thus the salicylate of soda, or other salicylate of alkali, is produced, which, upon its removal from the still, is boiled in water to remove the superfluous carbolic acid, and finally exposed to the action of muriatic acid, in which the salicylic acid forms as a white precipitate.
None of the proceedings hereinabove described do I claim to have invented but my invention consists in boiling the ingredients in the still 0 under pressure, and in thereby obtaining a more perfect commingling of the ingredients, and a consequent greater yield of salicylic acid, than when boiling in an open still, and losing in a vaporous state many particles of carbolic acid and soda.
Of course the still or boiler should have a means of discharging surplus vapors, and I therefore prefer to provide its neck or discharge-pipe b with a cock, 0. When this cock is opened, the still or boiler may discharge into a vessel, E, whence the contents may be poured back into the still or boiler through a pipe, f, having a cock, g. The still or boiler 0 should also have a safety-valve, d, and a thermometer, h,- but I do not here lay claim to any arrangement of apparatus, as I claim and here desire to secure by Letters Patent The process herein described of manufacturing salicylic acid by conducting carbonic acid from a generator into a closed still, which contains a mixture of carbolic acid and an alkali, while its contents are heated, substantially as specified.
GRAF.
Witnesses:
A. V. BRIE-SEN, E. 0. WEBB.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US166863A true US166863A (en) | 1875-08-17 |
Family
ID=2236272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US166863D Expired - Lifetime US166863A (en) | Improvement in processes of producing salicylic acid |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US166863A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2644011A (en) * | 1950-11-08 | 1953-06-30 | American Cyanamid Co | Process for producing 4-amino-2-hydroxybenzoic acid |
-
0
- US US166863D patent/US166863A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2644011A (en) * | 1950-11-08 | 1953-06-30 | American Cyanamid Co | Process for producing 4-amino-2-hydroxybenzoic acid |
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